1.2.2. In the case of a device equipped with a replaceable light source, if results of the test described above do not meet the requirements, tests on devices shall be repeated using another standard light source. a2c0
1.2.2. With respect to the gradient of luminance the unfavourable deviation may be:
2.5 x Bo/cm comparable to 20 per cent
3.0 x Bo/cm comparable to 30 per cent 		a0c0